Traction-wheel.



J'. PORTEOUS.

TRACTION WHEEL.

APPLICATION FILED MAR. 10, ms.

Patented Oct. 27, 1914.

3 SHEETS-SHEET 1.

IN V EN TOR. fldzm M A TTORNE Y.

WITNESSES:

J. PORTEOUS.

TRACTION WHEEL.

APPLICATION FILED MAILHZ, 1913.

1,115,019. Patented 0013.27, 1914.

3 SHEETS-SHEET 2.

WITNESSES: IN VEN TOR.

AL a U93? m A TTORNE Y.

J. PORTBOUS.

TRACTION WHEEL.

APPLICATION FILED MAR.18, 1913.

l, 1 1 5,01 9. Patented 001;. 27, 1914.

8 SHEETS-SHEET 3.

WITNESSES. INVE/VTUR A TTOR/VEY UNITED srnrrns .JAMES PORTEOUS, OF FRESNO, CALIFORNIA.

TBACTIGN-WHEEL Specification of Letters Patent.

Patented Oct. 27, 1914.

Application filed March 18, 1913. Serial No. 755.068.

' To all whom it may concern Be it known that I. J .urns Pon'rnons, a citizen of the United States, and a resident of the city of Fresno, county of Fresno, State of'Califo'rnia, have invented a new and 'useful' Improvement in Traction- Wheels, of which the following is a specification. g

I My invention relates to a device for keeping the wheels from slipping or sinking in soft ground, and consists of plates or shoes attached to the periphery of thewheel in such manner that the wheel will rest on one or more of said plates at all times during its revolution. Such plate is connected at each end with the adjoining plate so that when the wheel'is rollingeither forward or backward, and the center of gravity passes over the center of the plate where it is pivoted to the wheeL-andan end of the plate approaches the bumper it will, being attached to the end of the plate adjoining it, force such plate to the common bumper at the same time. l

In the drawings which accompany this specification, Figure 1 is a side view of the wheel complete, Fig. 2 is a side view oi the wheel with thesh'oes removed, Fig. 3 is a view of the periphery of the'wheel, showing the hub, Fig. 4 is a top view of one form of shoe, which is pivoted to the periphery of the wheel, Figlfi is a side. view of the form of shoe shown in Fig. 4 with a Hat sole, Fig. 6 is a side View of the form of shoe shown in Fig. 4"With a concave sole, Fig. 7 is a drum wheel showing the shoes thereto attached, Fig. 8"is a side view of the shoe attached to the drum wheel shown in Fig. 7, Fig. 9 is an endview of Fig. 8, Fig. 10 is a top view of Fig. 8. Fig. 11. is a view I of the connecting pin and links.

In said draw1ng,A is the wheel which can be constructed with an ordinary hub 1,

and spokes 2. The rim 3 thereof is constructed with a plurality of transverse pivotal bearings 4., equidistant apart. In my construction I prefer to have such bearings v. opposite to or at the end of each spoke and to have them project so the center of the bearing is on line with the periphery of the w en. At the pivotal bearings 4, I have increased the thickness of the rim to make such bearings more rigid. Midway between such conti' uous pivotal bearings 4, Ihav'e (I bumpers or rests 11 projecting uniformly on the periphery of the wheel.

In lieu of the wheel above described the hub and spokes may be utilized without the run by constructing the pivotal bearings 4 and the bumpers 3 on the outside ends of alternate spokes, or an ordinary disk can be substituted, or two or more wheels can he hung from the same axle with the plates connecting the peripheries thereof as hereinafter described.

B is a shoe or plate the base of which is the same length as the distance between the centers of contiguous bumpers 11. Each is pivoted to the rim of the wheel at ivotal bearings 4. Shoe B is constructed with two uniform parallel upright pivotal bearing projections (3 running lengthwise on the upper side of said shoe one passing on either side of the rim as a convenient means for pivoting the shoe to rim. The pivot is shown as 7. For the purpose of running such wheels over uneven ground I have constructed such pivotal joints loosely. At the forward end on the upper side of said shoe B I have constructed twin upright posts 9 and at the opposite corners ,of such shoe, twin'lugs 10. Posts 9 of one shoe are connected with lugs .10 of the adjoining shoe by means of a connection 8 pivoted to posts 9 near the top thereof, and pivoted to lugs 10 on the adjacent side of the next contiguons shoe. This connection should be pivoted to lug 10 nearer the base of the plate or shoe than where pivoted to post 9 and is of such length that the shoe has a movement on pivot 7 so it is possible for the ad o1n1ng ends of any two shoes to rest on their common bumper 11.

It will be noted .that in certain positions 'tion 8 is hinged changes its position relative to bumper 11, so as to bring the next forward shoe to which the other end of link 8 is hinged into a ilane approximately parallel with the round when the first named shoe rests on um'ppr 11 and as the center of gravity passes over pivot 7 of such succeeding shoe the same combination is repeated, thus forming a continuous track on which wheel A travels. It will be noted that in running the wheel backward the same result is accomplished of forming a track on which the wheel passes.

I have also used my said invention on drum wheels, constructing two disks or wheels of approximately the same diameter and have them connected with the shoes as shown in Figs. 8, 9 and 10. The -construction of shoes as hereinbefore described permits the wheel to move backward as well as forward.

What I claim as my invention is:

1. In a wheel, the combination of a plurality of plates, each of which is rockingly pivoted at its approximately lateral center to the rim of such wheel, members connecting the adjacent ends of contiguous plates adapted to draw such connected lates on the under 'side of such wheel, as t 0 wheel rolls either backward or forward, toa common plane.

2. In a wheel the combination of a plurality of bumpers equidistant apart on the periphery thereof, a plurality of plates ,equal to the number of such bumpers rockingly pivoted at. the approximate lateral center thereof .to the rim of the wheel midway between contiguous bumpers, upward projections at each end of each plate, members pivotally connecting such upward projections on adjacent ends of contiguous plates, such plates being adapted and 'arranged so the connected ends of connected plates can rest on the bumper between such connected plates, and such pivotally connecting members being adapted to force a nected shoes, as such wheel rotates in either direction, all substantially as described.

3. In a wheel the combination of a plurality of bu'm'pers equidistant apart on the rim thereof, an endless series of plates, each of such plates having projections on the upper side thereof at each end and in the middle, each of such plates being pivoted at the middle projection to the rim of the wheel midway between contiguous bumpers, and arranged so the adjacent ends of contiguous plates can rest on the bumper between such plates, links connecting the projections on the adjacent ends of contiguous shoes at a point nearer the base on the one projection than on the other, and adapted to force a pivotal movement at the middle of such plate as such wheel rolls, all substantially as described.

JAMES PORIEOUS.

Witnesses Ennns'r Kna'r'rn,

on Even.

Copter; at that patent as be abet tor five cents each, by aunt-emailing the 'fioiaatoner at mama,

Washington, E). W

reciprocating movement between such con- 

